Final answer:
The Yellow top tube is used for blood cultures as it contains substances that aid in the growth of microorganisms present in the blood, helping in the diagnosis and treatment of bloodstream infections.
Step-by-step explanation:
The Yellow top tube is the one commonly used for blood culture. Blood culture is a critical laboratory test used to detect infections in the bloodstream, allowing for appropriate medical treatment. The yellow top tube typically contains sodium polyanethol sulfonate (SPS), an anticoagulant and microbial growth inhibitor that facilitates the recovery of microorganisms.
The Yellow top tube is used for collecting specimens when a blood culture is ordered because it is designed to enrich the growth of microorganisms in a sample of blood. Health care professionals draw blood into these tubes and then incubate them to allow any bacteria or fungi present in the blood to grow so they can be identified and sensitivity tests can be done to determine the right antibiotic treatment.